Textural profile and phenolic content of date TEXTURAL PROFILE ANALYSIS AND PHENOLIC CONTENT OF SOME DATE PALM VARIETIES (original) (raw)
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Acta Scientifci Nutritional Health, 2022
It is considered that the date palm fruit (Phoenix dactylifera) was one of the first crops to be farmed in the Middle East, dating back thousands of years. The current study aimed to assess the variations in the quality of the new strain of Nag Hamady and Medjool cultivar on the basis of physical characteristics and chemicals properties. There was conducting research on date palm fruits from a 30-year-old seedling tree in Nag Hamady, Egypt. The results were compared to those of Medjool cv. in two consecutive seasons (2020 and 2021). A novel seedling strain's physical and chemical properties were the primary focus of this investigation. In compared the number of date/Kg, Medjool cv. recorded (110 kg/palm), however the maximum yield was seen in Nag Hamady 2 (250 kg/palm). When it comes to physical features like length, diameter, weight, and number of dates per kg, the Nag Hamady 2 had the greatest numbers, at 5.40 cm, 2.60 cm, 28.00g, and 38.00 dates per kg, while the Medjool had the lowest. Nag Hamady 2 has the best chemical characteristics, according to the results. The soluble solid content of a date palm fruit is 80.00 gm per 100 gm. There were 80.20 gm of carbs per 100 gm and 3.85 gm of protein per 100 gm. It was determined that the ash and fiber levels were 0.67 and 6.50 gm per 100 gm, respectively. The carbohydrate content was found to be high in glucose and fructose, and it was found to be free of sucrose. Due to its low level of crude lipids 0.50g/100g compared with content of sugar, date palm might be beneficial for cardiovascular and diabetic patients. There is the great calcium content in Nag Hamady 2 may be a good supply of calcium, which is required for healthy bone formation and energy metabolism. The date fruits are regarded to be a healthy diet rich in minerals and play an important function in the development of the immune system for humans because of the presence of these key components in the fruit.
Journal of Scientific Research, 2010
Fourteen native date cultivars from different oases and regions of Morocco, Tunisia and Algeria were examined for their approximate composition, water activity, and CIELAB parameters. Sugars were the predominant component in all studied date cultivars (~ 54.14 - 75.56 g/100g dry matter), followed by moisture content (~7.2 - 31.9%), along with small amount of protein (~1.9 - 3.3g/100g dry matter), fat (~ 0.1 - 0.44g/100g dry matter), and ash (~1.88 - 3.45g/100 g dry matter). Dates with early maturity had the highest water activity (0.78 - 0.87) in contrast to late maturing dates cultivars. In the Deglet Nour (Tunisia) and Aziza bouzid (Morocco) cultivars, sucrose is dominant, whereas, the majority of other cultivars were rich in fructose and glucose in comparable proportions. No significant changes were observed in the approximate composition of samples of different geographical origins. All cultivars show significant differences in color. The date with late maturity (from Assiane, A...
Pakistan Journal of Botany, 2019
In this study, fruits of date (Phoenix dactylifera L.) varieties were analyzed to assess their nutritional characteristics. Mineral profile analysis of twenty-one date varieties grown in Pakistan was performed. The results of mineral profile analysis proved that dates were a good source of minerals like potassium, calcium, iron and magnesium, but were deficient in sodium content and hence are very suitable fruit for hypertensive people. Sugar profile analysis showed that the maximum glucose content was recorded in Zaidy (44.44%) and fructose content in Karblain (33.21%) and the maximum sucrose percentage was found in Hillavi (6.99%). Vitamin (B1, B2, and B3) analyses revealed that vitamin B1 was not present in detectable amount in the date varieties. The highest concentration of vitamin B2 was detected in Khopra (0.031 mg per 100g), while the highest concentration of vitamin B3 was verified in Zaidy (2.73 mg per 100g). The range of the total phenolic contents ranged from 142.52±0.64 to 298.02±0.95 mg gallic acid equivalent per 100 g on fresh fruit weight basis. All date varieties proved to be a good source of phenolic compounds, therefore, they possess high antioxidant capacity. It was concluded that Dhakki, Hillavi and Aseel Sindh varieties might suit well for diet because of their good nutritional properties.
Evaluation of antioxidant activity, phenolics, sugar and mineral contents in date palm fruits
Journal of Food …, 2009
Sugar and mineral compositions of 10 Tunisian date varieties were investigated. Hydrophilic (aqueous extract) and hydrophobic extracts (ethanol extract) were used to determine the phenol contents and the total antioxidant activities of these dates. Results showed that date fruit varieties were rich in soluble sugars, which varied from 35.57 (Smiti variety) to 77.88 g/100 g fresh weight (FW) (Korkobbi variety). Several minerals were also present in the following order; K, Ca, P, Mg, Na, Fe, Cu, Zn and Mn. The potassium content reached 0.74 g/100 g dry weight in Smiti variety. For all date varieties, the phenol content did not exceed 9.70 (milligram of gallic acid equivalent/100 g FW). The original antioxidant activity reached 31.86 mg of ascorbic acid equivalent antioxidant capacity/100 g (FW) for Garn ghzal variety. However, it was only 17.77 for the Nefzaoui. Therefore, it can be deduced from these results that all these fruit varieties can be considered as high-energy food and only Garn ghzal seems to be interesting for technological purposes as food antioxidants.j fbc_225 390..403
International Journal of Food Science and Technology, 2006
Five date palm (Phoenix dactylifera L.) varieties, commonly grown in the UAE, were studied for their chemical composition, physical, mechanical and rheological properties. All measurements were made at the ‘tamr’ stage, the final stage of fruit ripeness. Samples were analysed for sugar, moisture, protein, ash and mineral element contents. Physical measurements as well as mechanical and rheological measurements of the fruit including pitting pressure, shear pressure, and modulus of elasticity were also carried out. Significant differences were observed in the characteristics that were studied, allowing for distinguishable grades among the five varieties. Chemical and physical characteristics of the fruits influenced their mechanical and rheological properties, which in turn can be indicators of firmness and ultimately of quality. Results from this work revealed new and essential information for better understanding of the date fruit that helps to enhance industrialisation and propagation of the best date varieties that satisfy producers’ as well as consumers’ demands.
Comparative Study on Five Sudanese Date (Phoenix dactylifera L.) Fruit Cultivars
Abdel Moneim E. Sulieman, Itimad A. Abd Elhafise, Awad M. Abdelrahim
The date palm (Phoenix dactylifera L.) is one of mankind’s oldest cultivated plants. A date palm fruit is an important component of the diet in most of the hot arid and semi arid regions of the world. The present study aimed at investigating the physical and chemical properties as well as microbiological characteristics of five date palm cultivars cultivated in Sudan. The results showed that the physical characteristics like fruit weight, length, flesh thickness, seed weight differed significantly between the various cultivars. Although most of the cultivars had similar chemical components, there were some few differences. However, the microbiological analyses proved that no significant differences were found among the cultivars.
Brazilian Journal of Biology, 2022
Date fruit is known to be the staple food in the Arab countries. It provides a lot of potential health benefits and can be the essential source of nutrients. The majority of Moroccan varieties are not characterized for their chemical, biochemical and quality properties. The aim of this work was to assess the chemical composition of 17 varieties of Moroccan date fruits (Phoenix dactylifera L.) and to determine their nutritive components. The analysis showed that the dates are rich in sugars (51.80-87.98%), they contain low concentration of proteins (1.09-2.80%) and lipids (0.16-0.39%). The predominant mineral is potassium (1055.26-1604.10 mg/100 g DW). Moreover, they contain high concentrations of malic acid (69.48-495.58 mg/100 g (DW)), oxalic acid (18.47-233.35 mg/100 g DW) and tartaric acid (115.70-484.168 mg/100 g DW). These results suggest that the date fruit are nutritious and can be an excellent source for human nutrition and health benefits.
2018
The main goal of this study was to determine and compare the nutritional value of ‘Barakawi’ – a dry date cultivarand ‘Mishrig Wdkhateeb’, which is a semi-dry cultivar. The fruit chemical composition, minerals content and energy values of both cultivars were studied. The results obtained showed significant variations between fruits of the two cultivars. On basis of 100 g dry weight, ‘Barakawi’ fruits had higher concentrations of dry matter (94.80 %), total carbohydrates (94.37%), available carbohydrates (88.40 %), non-reducing sugars (44.51%) and energy value (380.22 k. cal.), whereas, ‘Mishrig Wdkhateeb’ had higher concentrations of protein (5.70%), fats (1.52%)), fibers (6.76%)), total sugars (86.27%) and reducing sugars (60.44%). Regarding minerals content, fruits of ‘Mishrig Wdkhateeb’ had higher concentrations of potassium (160.26 mg), sodium (17.01 mg), magnesium (06.09 mg), manganese (2.22 mg) and zinc (2.10 mg), while ‘Barakawi’ fruits had higher concentrations of calcium (1...
Journal of the Saudi Society of Agricultural Sciences, 2020
The date palm fruit (Phoenix dactylifera) is one of the earliest crops to be cultivated in the Middle East. Many varieties of dates are available and being marketed at various price ranges. However, there is no standardized approach available to verify the quality of Saudi date palm fruits. The current study aimed to assess the variations in the quality of different varieties of Saudi dates on the basis of the metabolite composition, proximate analysis, physical characteristics and biological activities. Nine date palm varieties Berni, Halaoua, Shalabi, Sogaai, Sukkari, Nebtat Ali, Anbara, Ajwa and Medjoul were evaluated via the Proton Nuclear Magnetic Resonance (1 H NMR) based metabolomics approach. The DPPH and nitric oxide (NO) scavenging abilities, NO inhibition via the cell-based approach and total phenolic content (TPC) were determined. The physical features including dimension, seed/weight ratios and color variation also were evaluated. The proximate composition was carried out using the protocol ascribed by AOAC method. Metabolomics approach was successfully being applied in discriminating date palm varieties. Un-targeted metabolite profiling was achieved based on the acquired NMR data. Different trend of biological activities were displayed. The Ajwa dates which was the smallest, shortest in length and darkest colored Saudi date palm fruit demonstrated the highest percentage of NO inhibition/scavenging. Based on the variation in physical features, biological activities, metabolites content and proximate analysis, no noticeable correlation were observed between the market price and Saudi date palm variety qualities.
Comparative Study on Five Sudanese Date (<i>Phoenix dactylifera</i> L.) Fruit Cultivars
Food and Nutrition Sciences, 2012
The date palm (Phoenix dactylifera L.) is one of mankind's oldest cultivated plants. A date palm fruit is an important component of the diet in most of the hot arid and semi arid regions of the world. The present study aimed at investigating the physical and chemical properties as well as microbiological characteristics of five date palm cultivars cultivated in Sudan. The results showed that the physical characteristics like fruit weight, length, flesh thickness, seed weight differed significantly between the various cultivars. Although most of the cultivars had similar chemical components, there were some few differences. However, the microbiological analyses proved that no significant differences were found among the cultivars. Gondeila 1.80 ± 0.10 5.29 ± 0.20 4.30 ± 0.25 0.30 ± 0.14 Values are means of triplicate determinations.